Search found 43 matches

by grommit2007
Fri 05 Feb, 2021 10:19 pm
Forum: Merged patches
Topic: [Patch] Aztech Sound Cards
Replies: 26
Views: 32529

Re: [Patch] Aztech Sound Cards

I found out that on real AZT2316 cards (I'm not sure if there are filters on the AZT1605 and earlier cards, I will have to look into this), there are no filters on the inputs and outputs of the cards, compared to a real Sound Blaster Pro 2. It seems that some clones of the Sound Blaster Pro 2 had no...
by grommit2007
Sun 06 Dec, 2020 3:10 am
Forum: Development
Topic: v17 compatibility & bug list
Replies: 77
Views: 80974

Re: v17 compatibility & bug list

After testing v17, I discovered that SMI/SMM instructions were added, and it appears that suspend/sleep mode works on the Intel VS440FX motherboard under Windows 95 OSR2, (and wakes up upon pressing a key or moving the mouse) however, upon waking up from sleep mode the emulated machine hangs, and ma...
by grommit2007
Sun 08 Nov, 2020 1:41 am
Forum: Patches
Topic: [Patch] Intel PIIX3 southbridge (including USB controller)
Replies: 8
Views: 8668

Re: [Patch] Intel PIIX3 southbridge (including USB controller)

Sorry for taking so long to comment on this! My main reaction is that I don't think the PIIX3 should be completely separate from the existing PIIX; apart from the USB controller the two are basically identical, so let's keep the existing code unified for the sake of maintainability. I'd be happier ...
by grommit2007
Tue 01 Sep, 2020 3:46 am
Forum: Patches
Topic: [Patch] Intel PIIX3 southbridge (including USB controller)
Replies: 8
Views: 8668

Re: [Patch] Intel PIIX3 southbridge (including USB controller)

Is it OK if I can make a patch to add this chipset and an Intel Desktop Board (Intel Premiere PCI/II) which supports it? All boards/computers additions are more than welcome! Actually, after some work, I got the BIOS to work and it boots (I tried DOS from a floppy disk and it boots to it). However,...
by grommit2007
Tue 01 Sep, 2020 12:16 am
Forum: Patches
Topic: [Patch] Intel PIIX3 southbridge (including USB controller)
Replies: 8
Views: 8668

Re: [Patch] Intel PIIX3 southbridge (including USB controller)

Sorry for taking so long to comment on this! My main reaction is that I don't think the PIIX3 should be completely separate from the existing PIIX; apart from the USB controller the two are basically identical, so let's keep the existing code unified for the sake of maintainability. I'd be happier ...
by grommit2007
Sat 22 Aug, 2020 4:29 pm
Forum: Patches
Topic: [Patch] Intel PIIX3 southbridge (including USB controller)
Replies: 8
Views: 8668

Re: [Patch] Intel PIIX3 southbridge (including USB controller)

so... we could plug external usb devices with this? The USB emulation is similar to the emulation for serial and parallel ports, it does not allow you to plug in external devices into the computer and use them in PCem. It's basically like the USB emulation found in the VIA southbridge which is alre...
by grommit2007
Sat 22 Aug, 2020 4:37 am
Forum: Patches
Topic: [Patch] Intel PIIX3 southbridge (including USB controller)
Replies: 8
Views: 8668

[Patch] Intel PIIX3 southbridge (including USB controller)

This is a patch that I created to replace the Intel PIIX southbridge on all 430HX and 430VX motherboards with the PIIX3 southbridge, which is the southbridge that came with motherboards based on these chipsets. I created it by using the code structure from the VIA VT82C586B southbridge, which is alr...
by grommit2007
Sat 01 Aug, 2020 5:55 am
Forum: General
Topic: PCem USB support
Replies: 15
Views: 13794

PCem USB support

Additional screenshots:
by grommit2007
Sat 01 Aug, 2020 4:27 am
Forum: General
Topic: PCem USB support
Replies: 15
Views: 13794

PCem USB support

Additional screenshots:

(Edit: Tests were performed on the ASUS P/I P55T2P4, ASUS P/I P55TVP4 and the EPoX P55-VA motherboards in addition to the Shuttle HOT-557)
by grommit2007
Sat 01 Aug, 2020 4:25 am
Forum: General
Topic: PCem USB support
Replies: 15
Views: 13794

PCem USB support

After a few weeks of work, I have managed to implement USB support on the PIIX3 southbridge similar to the implementation on the VIA southbridge which this program emulates. The tests were performed with the Shuttle HOT-557 (BIOS dated 08/15/96), Windows 95 OSR2.0, and the rare 1996 version of the U...
by grommit2007
Sat 18 Jul, 2020 8:51 am
Forum: General
Topic: PCem USB support
Replies: 15
Views: 13794

PCem USB support

Additional screenshots:
by grommit2007
Sat 18 Jul, 2020 8:49 am
Forum: General
Topic: PCem USB support
Replies: 15
Views: 13794

PCem USB support

Additional screenshots:
by grommit2007
Sat 18 Jul, 2020 7:18 am
Forum: General
Topic: PCem USB support
Replies: 15
Views: 13794

PCem USB support

Additional screenshots:
by grommit2007
Sat 18 Jul, 2020 7:04 am
Forum: General
Topic: PCem USB support
Replies: 15
Views: 13794

Re: PCem USB support

There is USB support in PCem, however it does not extend to adding interfacing with actual host ports of the same type (the same thing applies to the parallel and serial ports as well). The USB support is present in the FIC VA-503+ motherboard and its VIA VT82C586B southbridge chipset, after install...
by grommit2007
Mon 13 Apr, 2020 12:55 am
Forum: Development
Topic: null-modem emulation
Replies: 8
Views: 9193

Re: null-modem emulation

Plus, there are games that won't work with network, just modem and null-modem like the first Command & Conquer If anyone is interested in porting the null modem and modem code from DOSBox to PCem, here is the code from the DOSBox source code website: Null modem: https://sourceforge.net/p/dosbox...
by grommit2007
Sun 12 Apr, 2020 8:49 pm
Forum: Development
Topic: null-modem emulation
Replies: 8
Views: 9193

Re: null-modem emulation

This idea seems to have a potential beyond just adding emulation of null modem serial cables, it could be also used to add emulation of actual modems (and their chipsets), and possibly allow web browsing at dial-up speeds. There is modem emulation in DOSBox using TCP/IP interfacing and Hayes AT mode...
by grommit2007
Tue 31 Mar, 2020 3:59 pm
Forum: Development
Topic: v16 compatibility & bug list (WIP)
Replies: 55
Views: 65592

Re: v16 compatibility & bug list (WIP)

Is the RAM not counting after a soft reboot (via CTRL-ALT-DEL or Windows 9x restart) normal? In previous versions, when either of these resets were performed, the BIOS RAM counting would occur like it does on a cold boot or a hard reset. (Issue shows on Shuttle HOT-557). Yes, that's totally normal....
by grommit2007
Tue 31 Mar, 2020 2:57 pm
Forum: Development
Topic: v16 compatibility & bug list (WIP)
Replies: 55
Views: 65592

Re: v16 compatibility & bug list (WIP)

Is the RAM not counting after a soft reboot (via CTRL-ALT-DEL or Windows 9x restart) normal? In previous versions, when either of these resets were performed, the BIOS RAM counting would occur like it does on a cold boot or a hard reset. (Issue shows on Shuttle HOT-557).
by grommit2007
Thu 12 Mar, 2020 10:34 pm
Forum: Patches
Topic: [Patch] Sound Blaster AWE32 RAM selection
Replies: 6
Views: 10176

Re: [Patch] Sound Blaster AWE32 RAM selection

You definitely cannot use more than 28MB by means of the AWE32 API, because the addresses that would permit addressing those 4 remaining megabytes address the internal ROM memory. About 4MB and 16MB, that's more about hardware accuracy. You had to use two 30pin SIMM modules ( https://en.wikipedia.o...
by grommit2007
Thu 12 Mar, 2020 1:42 am
Forum: Patches
Topic: [Patch] Sound Blaster AWE32 RAM selection
Replies: 6
Views: 10176

[Patch] Sound Blaster AWE32 RAM selection

I have created a patch which allows the selection of RAM sizes of 4MB, 16MB and 32MB on the Sound Blaster AWE32 sound card.

Contrary to official Creative documentation, the EMU8000 can handle these RAM amounts.

The patch is attached below.
by grommit2007
Wed 11 Mar, 2020 9:44 pm
Forum: Development
Topic: [Bug] Sid and Al's Incredible Toons
Replies: 3
Views: 4594

Re: [Bug] Sid and Al's Incredible Toons

Looks broken. Tried it on the Diamond Stealth 32 and it flickers like heck. Screenshot from 2020-03-11 21-37-50.png The game's readme file mentions that it has issues with Tseng-based graphics cards (which is most likely real behaviour), and for a change in the in the configuration file to prevent ...
by grommit2007
Wed 11 Mar, 2020 4:07 pm
Forum: Development
Topic: [Bug] Sid and Al's Incredible Toons
Replies: 3
Views: 4594

[Bug] Sid and Al's Incredible Toons

In this game, while running it in either a Windows 9x DOS window or real mode MS-DOS, the screen appears to be duplicated at the top, and it flashes rapidly. This issue occurs on the S3 Virge 325 and DX, the ATI Mach64 cards, and the PCI Trident cards. (these are the cards that I tested for this iss...
by grommit2007
Wed 19 Jun, 2019 3:43 pm
Forum: General
Topic: Possiblity of implementing cache emulation
Replies: 14
Views: 16237

Re: Possiblity of implementing cache emulation

Would it ever be possible to implement this in the future, when the CPU host resources aren't much of a problem, and with an option to select the old (current) behavior?
by grommit2007
Tue 18 Jun, 2019 5:01 pm
Forum: General
Topic: Possiblity of implementing cache emulation
Replies: 14
Views: 16237

Re: Possiblity of implementing cache emulation

How come?
by grommit2007
Tue 18 Jun, 2019 4:02 pm
Forum: General
Topic: Possiblity of implementing cache emulation
Replies: 14
Views: 16237

Possiblity of implementing cache emulation

Would an implementation of CPU cache and motherboard cache be possible, now that there is a new recompiler in PCem?
by grommit2007
Sun 28 Apr, 2019 5:37 pm
Forum: General
Topic: Speed timings for emulated hard disks
Replies: 11
Views: 12846

Re: Speed timings for emulated hard disks

Is that really a level accuracy we need? Most people aren't going to choose to emulate a terrible and slow old HDD over the modern 7200RPM unit or even SSD the HDD image is saved to. It will help with historical accuracy, as PCem has this already with CPU speeds, CD-ROM speeds and timings for video...
by grommit2007
Sun 28 Apr, 2019 4:15 am
Forum: General
Topic: Speed timings for emulated hard disks
Replies: 11
Views: 12846

Speed timings for emulated hard disks

Would it be possible one day to implement a speed timing feature for the emulated hard disks similar to the speed selection for CD-ROM drives and the timings for video cards? For example, this page on CNET shows the rotational speed, seek time and data transfer rate (and other useful information for...
by grommit2007
Sun 14 Apr, 2019 11:20 pm
Forum: General
Topic: Video BIOS messages not showing up on startup before BIOS POST screen
Replies: 9
Views: 15051

Video BIOS messages not showing up on startup before BIOS POST screen

I have noticed that in PCem versions before 13, (up to PCem v12) if a graphics card had a startup message in its ROM, it would appear for a few seconds before the motherboard BIOS POST screen appears. From PCem v13 onwards, the graphics card startup messages in its ROM still appear, but they appear ...
by grommit2007
Wed 18 Apr, 2018 1:18 am
Forum: General
Topic: AudioPCI impressions
Replies: 19
Views: 19590

Re: AudioPCI impressions

The crackling does not appear to be game related, I have also heard the crackling on all programs that utilize MIDI playback.

Also, the digital sound no longer works on DOS Miles Sound System based games, and detecting the card in such a game fails, followed by a very high pitched whine.
by grommit2007
Thu 12 Apr, 2018 12:56 am
Forum: General
Topic: AudioPCI impressions
Replies: 19
Views: 19590

Re: AudioPCI impressions

After further research and testing, I have found out that changing the emulated CPU speed partially fixes the audio problems that I have previously mentioned. Previously I tested it with a Pentium 75, and then I tested it with a Pentium 133, and most of the audio problems are gone. Is it possible to...